Riyadh Metro ist ein riesiges städtisches Verkehrssystemprojekt, das in Riad, Saudi-Arabien, im Bau ist. Das Projekt wird 85 Bahnhöfe umfassen, die entlang von 6 Transitlinien mit einer Gesamtschienenlänge von 176 km gebaut werden. Es wird erwartet, dass das System bei seiner Eröffnung im Jahr 2018 täglich mindestens 1 Million Passagiere bedienen wird.
For this large infrastructure project, Dextra Middle East has been involved on various stations and packages.
Ausgrabungsarbeiten
Before proceeding with general construction works, during early excavation phase, it is required to anchor retaining walls back into the stable ground in order to prevent any wall displacement. This will allow to keep excavating in a safe environment.
For that purpose, Dextra supplied steel ground anchors installed through retaining wall. Each system is based on a high-tensile fully threaded bar, coming with nut and plate, and grouted to provide bonding with the soil.
Floß- und Vertikalverbindungen
Bartec-Bewehrungskupplungen were supplied for the works in the stations. Couplers were used for slabs, column and wall connections. A typicall application on this project is to cast rebar couplers in the concrete with reinforcement, and then proceed with second phase bar connection at a later stage.
Unitec bolted couplers can have also been use on various parts of the project. Typically Unitec is used when overlap is planned but lapping length appear to be too short to perform a safe splice. In that case Unitec provides a convenient and full performance connection.